Plastic scintillators are widely used in high-energy and medical physics, often for measuring the energy of ionizing radiation. Their main disadvantage is their non-linear response to highly radiation, called ionization quenching. This nonlinearity must be modeled corrected applications where an accurate measurement required. We present a new experimental technique granularly measure dependence...

Several recent advances in turbulent dynamo theory are reviewed. High resolution simulations of small-scale and large-scale dynamo action in periodic domains are compared with each other and contrasted with similar results at low magnetic Prandtl numbers. It is argued that all the different cases show similarities at intermediate length scales. On the other hand, in the presence of helicity of ...

Development of low cost, easy-to-use chemical sensor systems for low dose detection of γ radiation remains highly desired for medical radiation therapy and nuclear security monitoring. We report herein on a new fluorescence sensor molecule, 4,4'-di(1H-phenanthro[9,10-d]imidazol-2-yl)biphenyl (DPI-BP), which can be dissolved into halogenated solvents (e.g., CHCl3, CH2Cl2) to enable instant detec...

We determine how the yield of large transverse momentum hadrons is modified due to induced gluon radiation off a hard parton traversing a QCD medium. The quenching factor is formally a collinearand infrared-safe quantity and can be treated perturbatively. In spite of that, in the p⊥ region of practical interest, its value turns out to be extremely sensitive to large distances and can be used to...

the quenching of quinine fluorescence intensity in the presence of some anions in aqueous solution at ambient temperature has been investigated. the quenching is found to be collisional or dynamical in nature. this study reveals the order of two groups of quencher: nai > nabr > nacl > naf and k2cr2o7 > kmno4 >na2so4 > naclo3. increasing anion size in the both groups leads to an  increase in the...

Melanized microorganisms are often found in environments with very high background radiation levels such as in nuclear reactor cooling pools and the destroyed reactor in Chernobyl. These findings and the laboratory observations of the resistance of melanized fungi to ionizing radiation suggest a role for this pigment in radioprotection. We hypothesized that the radioprotective properties of mel...